2121503233 has 4 divisors (see below), whose sum is σ = 2213742528. Its totient is φ = 2029263940.

The previous prime is 2121503227. The next prime is 2121503261. The reversal of 2121503233 is 3323051212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2121503233 - 2²⁹ = 1584632321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121503203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46119613 + ... + 46119658.

It is an arithmetic number, because the mean of its divisors is an integer number (553435632).

Almost surely, 2^2121503233 is an apocalyptic number.

2121503233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2121503233 is a deficient number, since it is larger than the sum of its proper divisors (92239295).

2121503233 is an equidigital number, since it uses as much as digits as its factorization.

2121503233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92239294.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2121503233 is about 46059.7789074155. The cubic root of 2121503233 is about 1284.9352181607.

Adding to 2121503233 its reverse (3323051212), we get a palindrome (5444554445).

The spelling of 2121503233 in words is "two billion, one hundred twenty-one million, five hundred three thousand, two hundred thirty-three".